Thermostat for controlling operation of a heating,ventilation, and air conditioning (hvac) system

A thermostat to control operation of a heating, ventilation, and air conditioning (HVAC) system, the thermostat comprising:

• a set of wires;
• a memory;
• and
• one or more processors communicatively coupled to the memory and the set of wires, the one or more processors being configured to:
• determine an operation to be performed by the HVAC system based on at least one of a user input or one or more parameters associated with an indoor area, the indoor area being associated with the thermostat and the HVAC system;
• transmit, to the HVAC system via the set of wires, an HVAC signal indicative of the operation to be performed, wherein at least one wire of the set of wires is configured to communicate power signals and data signals associated with the HVAC signal;
• and
• cause the HVAC system to perform the operation based on the transmitted HVAC signal,
• wherein the set of wires comprises a common (C) line, a power line (R), and an outdoor activation (Y) line.